vital /ˈvaɪtl̟/ adjective Learner's definition of VITAL
1
[more vital; most vital] : extremely important : crucial必不可少的;極其重要的;關鍵性的 -
These matters are vital to national defense.這些事情對國防至關重要。
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He played a vital [=key] role in guiding the project.他在項目指導方面起了關鍵作用。
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The sciences are a vital part of the school curriculum.理科課程是學校課程必不可少的組成部分。
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It is vital that you follow all safety procedures. = It is of vital importance that you follow all safety procedures.遵守所有的安全規程極其重要。
2
always used before a noun : needed by your body in order to keep living維持生命所必需的 — see also vital signs 3
[more vital; most vital] : very lively or energetic充滿生機的;生氣勃勃的